Use black leather, safe, odorless, the suedes side will not cause damage to clothes. Take good care of the leather, wiping dirt for long use The Suction Clips have only two leather sheets with magnets, which is very to carry.And it is 7x7cm dimension. It can be fixed on clothes at any time or put in pockets. It is suitable for most instrument cameras The clip with adjustable plate is the "Outside" piece. Put the "inside" on the inside of the clothes and the "outside" on the outside of the clothes The mount overlaps at the same position and stay secures and then insert the device in the prominent gaps. Adjust the angles of the clips to get a good view of polices body camera The 45degrees adjustable plate of outside clip is defaults flat. Press the Screw dots and rotate plate at the same time to record in a good view. With very strong magnets, be careful not to pinch your hands when using it. If the positions of the two clips is opposite, the forces will decrease and easily fall off